NXP Semiconductors TJA1081TS,118

Overview

TJA1081TS,118 from NXP Semiconductors is a FlexRay node transceiver compliant with FlexRay Physical Layer V2.1 Rev. A and supporting key V3.0.1 features. It operates at data rates up to 10 Mbit/s, supports 60 ns minimum bit time, delivers differential TX/RX capability for automotive time-triggered networks, and is qualified per AEC-Q100 for engine control units and chassis domain ECUs.

For engineers reviewing the TJA1081TS,118 datasheet, TJA1081TS,118 pinout, TJA1081TS,118 application, or TJA1081TS,118 equivalent, this page provides verified operating modes (Normal, Receive-only, Standby, Go-to-sleep, Sleep), bus guardian interface via BGE, local/remote wake-up detection, fail-silent undervoltage behavior, and SSOP16 package integration details.

Technical Context

The TJA1081TS,118 implements a dual-supply architecture with independent VBAT (6.5–60 V), VCC (4.75–5.25 V), and VIO (2.2–5.25 V) rails, enabling operation in both 14 V and 42 V automotive systems. Its state machine supports five deterministic operating modes controlled by STBN and EN pins, with automatic transitions triggered by undervoltage flags (UVVBAT, UVVCC, UVVIO) or wake events.

It integrates a low-power receiver for bus activity monitoring in Standby/Sleep modes, differential bus driver with ±8 kV HBM ESD protection on BP/BM, and serial diagnostic readout via ERRN using EN as clock. The transmitter disables automatically upon overtemperature (Tj > Tj(dis)(high)) or TXEN_BGE clamping detection.

Key Specifications

Pinout & Package

Package: SSOP16 (SOT338-1), plastic shrink small outline package, 16 leads, body width 5.3 mm.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar FlexRay transceiver applications.

Compared with TJA1081TS,118, the TJA1080ATS/0Z omits V3.0.1 wake-up frame parsing and local wake-up pin, while MC33664AEF trades 10 Mbit/s capability and BGE-controlled bus guardian for SPI configurability - making TJA1081TS,118 the only option meeting full ASIL-D FlexRay cluster requirements.

Availability

TJA1081TS,118 is available at Aetrix Electronics and suitable for automotive ADAS, brake-by-wire, electric power steering, and chassis domain controller designs requiring stable component supply across extended product lifecycles.

Supply support for TJA1081TS,118 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in automotive networking and functional safety.

The TJA1081TS,118 belongs to NXP's FlexRay transceiver product line, engineered specifically for time-triggered automotive networks demanding ASIL-D compliance, fail-silent operation, and robust EMC performance in harsh ECU environments.

FAQ

What is the maximum data rate supported by the TJA1081TS,118?

The TJA1081TS,118 supports data transfer up to 10 Mbit/s, meeting FlexRay V2.1 Rev. A timing requirements for high-speed deterministic communication. This enables sub-250 µs end-to-end latency in safety-critical ADAS and powertrain applications. The device also supports a minimum bit time of 60 ns, ensuring precise synchronization across distributed ECU clusters.

How does the TJA1081TS,118 handle undervoltage conditions on its supply pins?

The TJA1081TS,118 implements independent undervoltage detection on VBAT, VCC, and VIO. Detection of UVVBAT forces immediate entry into Sleep mode (INH floating), UVVCC triggers Standby mode, and UVVIO causes internal pin clamping and Sleep entry. All three flags reset upon wake flag assertion or supply recovery, enabling predictable fail-silent behavior without software intervention.

Does the TJA1081TS,118 support both local and remote wake-up mechanisms?

Yes, the TJA1081TS,118 supports dual wake-up: local wake-up via voltage transitions on the WAKE pin (with configurable pull-up/pull-down bias), and remote wake-up via two methods - bus-level wake-up patterns (consecutive DATA_0 symbols) and dedicated FlexRay data frames emulating valid wake sequences. Wake source flags (LOCAL WAKEUP, REMOTE WAKEUP) are readable in the status register via ERRN/EN.

What package type is used for the TJA1081TS,118 and what are its key mechanical properties?

The TJA1081TS,118 uses the SSOP16 package (SOT338-1): a plastic shrink small outline package with 16 leads and 5.3 mm body width. It is RoHS-compliant, designed for surface-mount assembly, and optimized for thermal dissipation in automotive under-hood environments. The package supports standard reflow profiles and provides mechanical stability for vibration-prone chassis applications.

How is diagnostic information retrieved from the TJA1081TS,118?

Diagnostic status is accessed via the open-drain ERRN pin using EN as a synchronous clock. Reading the 12-bit status register (bits S0–S12) reveals wake sources, temperature flags (TEMP HIGH/MEDIUM), bus error, TXEN_BGE clamping, and undervoltage conditions. Each status bit maps directly to a hardware flag; for example, S4 = BUS ERROR, S5 = TEMP HIGH, and S0 = LOCAL WAKEUP - enabling precise root-cause analysis without protocol controller overhead.